Methyl 2-bromo-3-(difluoromethyl)-4-methylpyridine-5-carboxylate
3-Bromo-6-(difluoromethyl)-2-methylpyridine-5-carboxylic acid
5-Bromo-2-(difluoromethyl)-4-methylpyridine-3-carboxylic acid
5-Bromo-2-(difluoromethyl)-3-methylpyridine-4-carboxylic acid